Group the module crates under modules/

The service pseudo-clients and the ircd protocol link sat flat at the
repo root, mixed in with the daemon core and the SDK. Move them all
under modules/ so the tree separates concerns cleanly: the daemon in
src/, the SDK every module links against in api/, and the loadable
modules — the pseudo-clients plus the protocol link — in modules/.

Workspace members, the daemon's per-crate dependency paths, and each
module's api path are updated to match; the docs follow. No code change.

modules/chanserv/src/enforce.rs

@@ -0,0 +1,35 @@
+use fedserv_api::Store;
+use fedserv_api::{Sender, ServiceCtx};
+use fedserv_api::NetView;
+
+// ENFORCE <#channel>: re-apply the channel's settings to everyone present —
+// the mode lock, access status modes, and the auto-kick list.
+pub fn handle(me: &str, from: &Sender, args: &[&str], ctx: &mut ServiceCtx, net: &dyn NetView, db: &dyn Store) {
+    let Some(&chan) = args.get(1) else {
+        ctx.notice(me, from.uid, "Syntax: ENFORCE <#channel>");
+        return;
+    };
+    if !super::require_op(me, from, chan, ctx, db) {
+        return;
+    }
+    let Some(info) = db.channel(chan) else {
+        return;
+    };
+    ctx.channel_mode(me, chan, &info.lock_modes());
+    let members: Vec<String> = net.channel_members(chan);
+    for uid in members {
+        match net.account_of(&uid).and_then(|a| info.join_mode(a)) {
+            Some(m) => ctx.channel_mode(me, chan, &format!("{m} {uid}")),
+            None => {
+                let nick = net.nick_of(&uid).unwrap_or("*");
+                let host = net.host_of(&uid).unwrap_or("*");
+                if let Some(k) = info.akick_match(&format!("{nick}!*@{host}")) {
+                    ctx.channel_mode(me, chan, &format!("+b {}", k.mask));
+                    let reason = if k.reason.is_empty() { "You are banned from this channel." } else { &k.reason };
+                    ctx.kick(me, chan, &uid, reason);
+                }
+            }
+        }
+    }
+    ctx.notice(me, from.uid, format!("Re-applied \x02{chan}\x02's settings to everyone present."));
+}